HOPPER FOR LOOSE MATERIALS Russian patent published in 1999 - IPC

FIELD: mining, chemical, coal, building, food and other industries. SUBSTANCE: horizontal pins are made in form of hollow guide housing. Screw plugs with compression springs are installed inside housing at ends. Housing with plug at one side is fastened through base and flexible tube to diaphragm. At other side, screw plug and end piece moving along inner and outer surfaces of housing communicate with compressed air delivery system. The latter has flexible pipe with hole in wall connected with axial holes in base, screw plugs, housing and end piece and with radial hole of ring groove in second screw plug and with holes inclined relative to end piece axis. EFFECT: intensification of bridge breaking process in loose material hoppers. 4 dwg